/* This file is part of VoltDB.
* Copyright (C) 2008-2017 VoltDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with VoltDB. If not, see <http://www.gnu.org/licenses/>.
*/
package org.voltdb.plannodes;
import java.util.List;
import org.voltdb.catalog.Database;
import org.voltdb.expressions.AbstractExpression;
import org.voltdb.types.PlanNodeType;
import org.voltdb.types.SortDirectionType;
public class ReceivePlanNode extends AbstractReceivePlanNode {
public ReceivePlanNode() {
super();
}
@Override
public PlanNodeType getPlanNodeType() {
return PlanNodeType.RECEIVE;
}
@Override
public void generateOutputSchema(Database db)
{
// default behavior: just copy the input schema
// to the output schema
super.generateOutputSchema(db);
// except, while technically the resulting output schema is just a pass-through,
// when the plan gets fragmented, this receive node will be at the bottom of the
// fragment and will need its own serialized copy of its (former) child's output schema.
m_hasSignificantOutputSchema = true;
}
@Override
public void resolveColumnIndexes()
{
resolveColumnIndexes(m_outputSchema);
}
@Override
protected String explainPlanForNode(String indent) {
return "RECEIVE FROM ALL PARTITIONS";
}
@Override
public boolean isOutputOrdered (List<AbstractExpression> sortExpressions, List<SortDirectionType> sortDirections) {
return false;
}
}